Metals with More than One Oxidation State

Some Common Metals with More than One Oxidation State

Family	Element	Ion Name
VIB	Chromium	Chromium(II) or chromous
Chromium(III) or chromic
VIIB	Manganese	Manganese(II) or manganous
Manganese(III) or manganic
VIIIB	Iron	Iron(II) or ferrous
Iron(III) or ferric
Cobalt	Cobalt(II) or cobaltous
Cobalt(III) or cobaltic
IB	Copper	Copper(I) or cuprous
Copper(II) or cupric
IIB	Mercury	Mercury(I) or mercurous
Mercury(II) or mercuric
IVA	Tin	Tin(II) or stannous
Tin(IV) or stannic
Lead	Lead(II) or plumbous
Lead(IV) or plumbic